I have not had any trouble with this car till last week driving on the highway at 70 the car started to shake and lost power so I did manage to get it to my Dr. appointment and as long as I do not go over 55 or so it acts fine NO CODES???So went to dealer but they cannot look at it till Friday any other ideas? This did happen after I filled the car with gas but I always use this same station but I guess you never know but it seems to have trouble shifting when going faster?? It wa shaking so bad I thought I had a flat tire but even giving it gas slowly, it still would not go above 40 till I got to the Dr. appointment and it sat fro about an hour but today I tried getting it up to 70 and no good